211221341013 has 16 divisors (see below), whose sum is σ = 287162024256. Its totient is φ = 138051513600.

The previous prime is 211221340997. The next prime is 211221341029. The reversal of 211221341013 is 310143122112.

It is an interprime number because it is at equal distance from previous prime (211221340997) and next prime (211221341029).

It is not a de Polignac number, because 211221341013 - 2⁴ = 211221340997 is a prime.

It is a super-2 number, since 2×211221341013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221341033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300388 + ... + 716013.

It is an arithmetic number, because the mean of its divisors is an integer number (17947626516).

Almost surely, 2^211221341013 is an apocalyptic number.

It is an amenable number.

211221341013 is a deficient number, since it is larger than the sum of its proper divisors (75940683243).

211221341013 is a wasteful number, since it uses less digits than its factorization.

211221341013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017764.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211221341013 its reverse (310143122112), we get a palindrome (521364463125).

The spelling of 211221341013 in words is "two hundred eleven billion, two hundred twenty-one million, three hundred forty-one thousand, thirteen".